Box connection or elbow



NOV. 22, 1932. ANDERSON 1,888,546

BOX CONNECTION OR ELBOW Filed April 5, 1930 Patented Nov. 22, 1932 1 UNITED ATES PATENTQoF-FjcE'- ERNST'G. x. ANDERSON, on CHICAGO, ILLINOlIS, ASSIGNOB "11o Arrnn'ron nLiie'rnIc COMPANY, A CORPORATION OF ILLINOIS I V moxoonnnorron on ELBOW Application filed; April 5,

: In carrying out my invention, I employ conduit section in. the form of an elbow adapted to be screwed or otherwise fastenedat one end to the box, a large section on the convex .slde of} theelbow, extending inwardly from the otherend, beingcut awayand there being a complementary elbow section fastenedin place in sucha manner as not onlyto complete the contour ofthe elbow but'also to serveas one member of a two part clamp to connect 2 theotherend of the elbow to a conduit; this complementary section being. easily removable, preferably withoutcompletely detaching any screws or other-fastening means, j "Therefore viewe'd in one of its aspects, the .present invention may'be said tohave for its obj ect toproduce a-simple and novel two-part elbow device that will give easy access to -wires or cables passing through the -samefrom one 5 to ;the other of two members-iconnected togetherbytheelbow: a 1 The various features of novelty whereby my invention is. characterized will hereinafter be pointed out -with -particularity in the claims; but,.fora full understanding of my invention and ofits obj ectsand advantages, *referencemaybe ha'dlto'the followingdetailed descriptionitaken in connection with the aceompanying drawing, wherein ll 7 Figure l is a side view of a device embody- 'ingmy invention connectedto a conduit and toe wall=ofabox or'the likej Fig. 21's an eleyation, looking at the side which is toward 'theright inFig'. 1'; Figk3'isa1view similar to )Fig. 2, the detachable elbow s'ection 'bein'g omitted; Fig. 4 is a view. similar to 'Fig. 3,

' illustrating a slight modificatirm' only a fragment lofthe elbow being shown; and a portion .o fgthedeta chable elbow section being broken away; le ig- 5 ie c i n Q ?]1i e5,5 Oi

inner end .a-flan e 8 that rests "onfthfe'seat 7'.

1950. Serial No. 441,736.,

Fig. 4, apart ofthe detachable'sectionbeing inelevationpq I Referring to Figs. "1 to 3 of the drawing, 1 and 2 are two members which, whenplaced together, form {a conduit in theshapeptan elbow. The member 1, whichj may becalled the body member, has a" continuous tubular part 8 at one end. The part 3 may bescrwthreaded, or otherwise fashioned to permit 7 its attachment to a conduit or to a, tubular boss 4 on a wall. 5 ofa box or'the li-ke. When the: construction issuch' that the end'3- ofthe elbow isscrewed intothe boss 4; aflock'nut 6 may be employed to makethe connection secure. The line of division between'theftworgfi. members of the elbowis approximately along the longitudinal center line. along the'fsi'des of the elbow tothe part 3 and then outwardly :to the periphery of. theelbowrin :a-Qpl-ane (parallel with thelong axis ofthe divided end of the elbow to form aplane bearingffa'ce 7 on the inner end ofjthe' part 3. The-member 2, which -maybe of shet m'etal ajsit need not beas heavyasthe' body m'ember, has'at its h 1 72 e betweenja l h ly o. laps the sides of he trough in the bodyminher. On the inner end of the part 3 isa; 111g having-a lip;9;overlyingthefiangejS; It will be [seen that when thetwo of the 0 elbow arelaiduponieach other with'the flange i 8 resting on the seat 57 and funderlying the lip '9; they'are interlocked -against"relative endwi'se, or sidewise sliding movements but they may be separated by swinging the free or outer end of the member 2 towardfithe right; as viewed in' Fig. l, until=theflange 8 islifted out of the' cornerbetween the plane surface 7fand the curved edges 10 of'th'e' trough in'the bodymember; After the memher. 2 "has: been swung into a the position just described,it may-be withdrawn in the length wise directionfrom engagementwith the lip 9.. ItLwillbeiseen that the lip and the flange form a separablehinge between the two mem} bers a 1 v a 1;; l Theouter or free end of them mbere does.

(not rest upon the body member but is spaced apart denim-mend has on oppos'ite'sides sides are directed inwardly or toward the opposite end of the elbow. On the sides of the trough of the body member, opposite the hooks 11, are cars 12. Associated with the l cars 12 are long headed screws 13 which, in turn, engage the hooks and serve to draw the adjacent ends of the elbow members together. These screws are preferably made long enough to permit the member 2 to be swung out far. enough to make its complete withdrawal possible, without detaching the screws from the'ea-rs .12. sired to gain accessto the wires or cables, the lidof the elbow, as it were, may quickly ,be detached without separating any other element from the elbow; the entireinner end of the section 1 of the elbow being uncovered and providing the box with awindow of the 'full area of thebore in-the elbow. Since the greater part of the member 2 simplyextends into the trough of the body member, theiree or outer end may be drawn ytightly against a pipe'or conduitl l; entered \in the elbow at thatfen d. 'lnother words, one end-of the elbow" constitutes a clamp to se- 'cure'the elbow to a pipe or conduit. I

' (In Figs. 4: and 5, I have shown ajslight' modification. .The lug on the part 1 has 1 aneye 1'6 through which extends alip 17 on the inner end of'the member 2 to produce the separable hinge. j Also the flange 18 abuts against anabrupt shoulder 19 on each of the sides of the trough in the body member 1.

, f While I have illustrated and described .with particularity only a single form of my Y invention,with a slight; modification, I do not desire to be, limited to the exact structural details thus illustrated and described;

Y ,but 'intend tol'cover 'alllioims and arrange- 3 fments which comefwithin the definitions of my invention constituting the" appended claims-. H 1 I claim;

a 1 A tubular elbow into two sep-' arate'members' through one end to a point past ,the...turn,"interlocking shoulders between said fmembers atsaid point to forma. {separablehinge connection, and screws congo ne'ctin'g said members at the aforesaid end of the'elbow. r

'2.'A tubular :elbow comprising -a body :member having the convex side cut] away through one end around the turnin the 5 elbow and :mnmuumma partbeyond the turn, a complementary member co-operating with 'the' body member to'fcomplete theelbow, t

I interlocking shoulders b'etweenthe body [member'and the adjacent end of said complementary member adapted to be interen V gag ed by an .endwise and .swinging moveme f t e le te 1 ei 1b t r a S rable, hinge'connection 351-1; the inner endfof the complementarymember andan interlock between sa d members, and screws connect complementary member.

'from one end around the turn and unmutihold said auxiliary member against lengthwvise or sidewise movements when said 'mem- Therefore, when. it 18 de- 1 member having the inner endshaped; to be I screwed into an opening in a wall "or socket,

ing said members at the outer end of said 7 3. A tubular elbow comprising a body member having the convex side cut away '53 lated at the other end, and a separate com 'plementarymember co-operating with the body member to complete the elbow, said members having interengagingshoulders to bers are assembled together and also interlocking shoulders to constitute a separable.

body member, and screws holding-the outer end ofthe auxiliary" member to'fthe body member.v

I 1. A'tubula'r' elbow comprising a bod member having the convex side cutfawa'y from one end around the'turn and unmutilated at the other'end', and a separate comple mentary member co-operating with'the body member to co'mplete'the elbow, said members having interengaging shoulderstoholdsaid 7 auxiliary member against lengthwise {or sidewise movements whensaid members are assembled together and also interlocking shoulders to constitute a separable hinge be} h tween theinner end of the auxiliary member and the 'unmutilated portion of the body member, hooks at the sides of the outer end of the auxiliary member overlyingthe body member and having'their open sides facing the opposite end, and'headed' screws screwed 7 into the body member in position to be en gaged in said hooks and lockthe'two members together, said screws being longenough" to permit the outer end of the auxiliary mem- L ber to be lifted'high enough, withoutfde-" fiw taching the screws, to remove it from the o I body member.

5."A tubular elbow comprising; a "body the convex side of the elbowebeing cut away around the bend and out through the outer end, a separate complementary member for closing the open side of the body" member, said members having engaging 3 and overlapping parts to hold said members in elbow shape while permitting the complementary member to be disengagedjby lifting its outer end and withdrawing it lengthwise, and screw means for drawing the outer end to Ward the body member and securing it there- 0. r I r 6. A tubular elbowcomprisingv a body imember having the inner, end shaped to be screwed into-anlopening in a wall or socket, the convex side of the elbow beingcut away around the bend and out through vthe outer end, a separate complementary memberfor 7 closing the open side of the .body member, said members having engaging and overlap 1 ping parts to hold said members in elbow shape and leave the outer end of the complementary member spaced apart from the cor responding portion of the body member while permitting the complementary mem-' shape and leave the outer end of the comple- I mentary member spaced apart from the corresponding portion of the body member while permitting the complementary member to be disengaged by lifting its outer end and Withdrawing it lengthwise, the outer end of w the complementary member having'at the sides of the outer end hooks open toward the inner end, and-headed screws screwed into the body member and engaged with said hooks, said screws being long enough to permit the outer end of the complementary membar to be lifted far enough, without completely unscrewing the screws, to make it possible to lift the outer end of the complementary member high enough to withdraw the complementary member. 7

In testimony whereof, I sign this specification.

ERNST G. K. ANDERSON. 

